WO2020007051A1 - Amoled的侦测系统及侦测方法 - Google Patents

Amoled的侦测系统及侦测方法 Download PDF

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WO2020007051A1
WO2020007051A1 PCT/CN2019/074898 CN2019074898W WO2020007051A1 WO 2020007051 A1 WO2020007051 A1 WO 2020007051A1 CN 2019074898 W CN2019074898 W CN 2019074898W WO 2020007051 A1 WO2020007051 A1 WO 2020007051A1
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Prior art keywords
resistor
sampling
terminal
sampling voltage
electrically connected
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PCT/CN2019/074898
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English (en)
French (fr)
Inventor
曾玉超
梁鹏飞
黄泰钧
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深圳市华星光电半导体显示技术有限公司
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Publication of WO2020007051A1 publication Critical patent/WO2020007051A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

Definitions

  • the present invention relates to the field of display technology, and in particular, to a detection system and a detection method for an AMOLED display panel.
  • OLED display devices have self-emission, low driving voltage, high luminous efficiency, short response time, high definition and contrast, near 180 ° viewing angle, wide operating temperature range, and can achieve flexible display and Many advantages such as large-area full-color display are recognized by the industry as the most promising display devices.
  • OLED display devices can be divided into passive matrix OLED (Passive) Matrix OLED (PMOLED) and Active Matrix OLED (AMOLED) are two categories, namely direct addressing and thin film transistor (Thin Film Transistor, TFT) matrix addressing.
  • PMOLED Passive
  • AMOLED Active Matrix OLED
  • TFT thin film transistor
  • AMOLED has pixels arranged in an array, belongs to an active display type, and has high light emitting efficiency, and is generally used as a high-resolution large-sized display device.
  • the threshold voltage of the driving thin film transistor in each pixel in the existing large-size AMOLED is different from the intrinsic conductivity factor and the luminous coefficient of the organic light emitting diode, it will cause the same difference in gate-source voltage of the driving thin film transistor.
  • the brightness of the AMOLED display will also be non-uniform, so by using external detection compensation technology to compensate the driving thin film transistors in each pixel, the brightness uniformity is improved. As shown in FIG.
  • the existing AMOLED detection system includes: a display panel 100 and a detection circuit 200 electrically connected to the display panel 100; the display panel 100 includes a plurality of display areas 101, and each display area 101 Including a plurality of pixels 102 arranged in an array; the detection device 200 includes a plurality of analog-to-digital converters (ADCs) 201 corresponding to the plurality of display areas 101, and each of the analog-to-digital converters 201 has a corresponding display area 101
  • ADCs analog-to-digital converters
  • the plurality of pixels 102 are electrically connected; the gate-source voltage Vgs of the driving thin film transistor in the pixel 102 is sampled by the analog-to-digital converter 201, and the gate-source voltage Vgs is converted from an analog signal to a digital signal, and then compensated.
  • the object of the present invention is to provide an AMOLED detection system, which can solve the problems of the origin offset difference and the sampling gain difference of the analog-to-digital converter in each detection device, so that the sampling of the analog-to-digital converter is accurate and the AMOLED Detection accuracy.
  • the object of the present invention is also to provide an AMOLED detection method, which solves the problems of the origin offset difference and the sampling gain difference of the analog-to-digital converter in each detection device, so that the sampling of the analog-to-digital converter is accurate and improves Detection accuracy of AMOLED.
  • the present invention also provides an AMOLED detection system, including a plurality of detection devices respectively electrically connected to the display panel;
  • Each detection device includes an offset adjuster connected to the display panel, a gain adjuster connected to the offset adjuster, and an analog-to-digital converter connected to the gain adjuster;
  • the offset adjuster is configured to obtain a sampling voltage signal and provide an offset adjusting voltage to adjust the sampling voltage signal, and output a first sampling voltage output signal, where the first sampling voltage output signal is in a modulus Within the voltage sampling range of the converter;
  • the voltage sampling range of the analog-to-digital converter is that the sampling voltage signal corresponding to the voltage range of the analog-to-digital converter can provide a sampling code value
  • the gain adjuster is configured to obtain a first sampling voltage output signal, and provide a gain coefficient to adjust the first sampling voltage output signal, and output a second sampling voltage output signal to an analog-to-digital converter, so that each detection
  • the sampling code values provided by the analog-to-digital converter in the device corresponding to the same sampling voltage signal are the same.
  • the sampling code value provided by the analog-to-digital converter in each detection device corresponding to the same sampling voltage signal is 0.
  • the offset adjuster includes: a first operational amplifier, a first resistor, a second resistor, a third resistor, and a fourth resistor;
  • the inverting input terminal of the first operational amplifier is electrically connected to the first terminal of the first resistor, the non-inverting input terminal is electrically connected to the first terminal of the second resistor, and the output terminal outputs a first sampling voltage output signal;
  • the second end of the first resistor is connected to an offset adjustment voltage
  • a second terminal of the second resistor is connected to a sampling voltage signal
  • the two ends of the third resistor are electrically connected to the inverting input terminal and the output terminal of the first operational amplifier, respectively;
  • a first terminal of the fourth resistor is electrically connected to a non-inverting input terminal of the first operational amplifier, and a second terminal is grounded.
  • the gain adjuster includes: a second operational amplifier, an adjustable resistor, and a sixth resistor;
  • the inverting input terminal of the second operational amplifier is electrically connected to the output terminal, the non-inverting input terminal is electrically connected to the first terminal of the adjustable resistor, and the output terminal outputs the second sampling voltage output signal;
  • a second end of the adjustable resistor is connected to a first sampling voltage output signal
  • the first terminal of the sixth resistor is electrically connected to the non-inverting input terminal of the second operational amplifier, and the second terminal is grounded.
  • the gain coefficient of the gain regulator is Ra / (Ra + Rb); wherein Ra is the resistance value of the sixth resistor, and Rb is the resistance value of the adjustable resistor.
  • the ratio of the resistance value of the adjustable resistor to the resistance value of the sixth resistor ranges from 0 to 1/9.
  • the display panel includes a plurality of display areas corresponding to a plurality of detection devices, each display area includes a plurality of pixels arranged in an array, and an offset adjuster and a corresponding display area in each detection device. Multiple pixels in are electrically connected to obtain a sampling voltage signal of each pixel.
  • the offset adjuster in each detection device is electrically connected to the driving thin film transistor in a plurality of pixels in the corresponding display area.
  • the sampling voltage signal is a gate-source voltage of a driving thin film transistor.
  • the invention also provides a method for detecting an active matrix organic light emitting diode (AMOLED) display panel using a plurality of detection devices.
  • Each detection device includes an offset adjuster, a gain adjuster, and an analog-to-digital converter.
  • the method includes:
  • the offset adjustor obtains a sampling voltage signal, and provides an offset adjusting voltage to adjust the sampling voltage signal, and outputs a first sampling voltage output signal.
  • the first sampling voltage output signal is in an analog-to-digital converter.
  • the voltage sampling range of the analog-to-digital converter is that the sampling voltage signal corresponding to the voltage range of the analog-to-digital converter can provide a sampling code value;
  • the gain adjuster obtains a first sampling voltage output signal, and provides a gain coefficient to adjust the first sampling voltage output signal, and outputs a second sampling voltage output signal to an analog-to-digital converter, so that each of the detection devices
  • the sampling code values provided by the analog-to-digital converter for the same sampling voltage signal are all the same.
  • the sampling code value provided by the analog-to-digital converter in each detection device corresponding to the same sampling voltage signal is 0.
  • the offset adjuster includes: a first operational amplifier, a first resistor, a second resistor, a third resistor, and a fourth resistor;
  • the inverting input terminal of the first operational amplifier is electrically connected to the first terminal of the first resistor, the non-inverting input terminal is electrically connected to the first terminal of the second resistor, and the output terminal outputs a first sampling voltage output signal;
  • the second end of the first resistor is connected to an offset adjustment voltage
  • a second terminal of the second resistor is connected to a sampling voltage signal
  • the two ends of the third resistor are electrically connected to the inverting input terminal and the output terminal of the first operational amplifier, respectively;
  • a first terminal of the fourth resistor is electrically connected to a non-inverting input terminal of the first operational amplifier, and a second terminal is grounded.
  • the gain adjuster includes: a second operational amplifier, an adjustable resistor, and a sixth resistor;
  • the inverting input terminal of the second operational amplifier is electrically connected to the output terminal, the non-inverting input terminal is electrically connected to the first terminal of the adjustable resistor, and the output terminal outputs the second sampling voltage output signal;
  • a second end of the adjustable resistor is connected to a first sampling voltage output signal
  • the first terminal of the sixth resistor is electrically connected to the non-inverting input terminal of the second operational amplifier, and the second terminal is grounded.
  • the gain coefficient of the gain regulator is Ra / (Ra + Rb); wherein Ra is the resistance value of the sixth resistor, and Rb is the resistance value of the adjustable resistor.
  • the ratio of the resistance value of the adjustable resistor to the resistance value of the sixth resistor ranges from 0 to 1/9.
  • the display panel includes a plurality of display areas corresponding to a plurality of detection devices, each display area includes a plurality of pixels arranged in an array, and an offset adjuster and a corresponding display area in each detection device. Multiple pixels in are electrically connected to obtain a sampling voltage signal of each pixel.
  • the offset adjuster in each detection device is electrically connected to the driving thin film transistor in a plurality of pixels in the corresponding display area.
  • the sampling voltage signal is a gate-source voltage of a driving thin film transistor.
  • the AMOLED detection system of the present invention solves the origin of the analog-to-digital converter in each detection device by setting an offset adjuster and a gain adjuster in multiple detection devices.
  • the problem of offset difference and sampling gain difference enables the analog-to-digital converter in each detection device to provide a sampling code value corresponding to a sampling voltage signal in a voltage range, and simultaneously makes the The sampling code values provided by the analog-to-digital converter corresponding to the same sampling voltage signal are the same, so that the sampling of the analog-to-digital converter is accurate, and the detection accuracy of AMOLED is improved.
  • the AMOLED detection method of the present invention can solve the problems of the origin offset difference and the sampling gain difference of the analog-to-digital converter in each detection device, so that the sampling of the analog-to-digital converter is accurate and the detection accuracy of AMOLED is improved .
  • FIG. 1 is a schematic diagram of a conventional AMOLED detection system
  • FIG. 2 is a schematic diagram of an AMOLED detection system of the present invention.
  • FIG. 3 is a schematic diagram of a detection device of an AMOLED detection system of the present invention.
  • FIG. 4 is a schematic diagram of eliminating a difference in origin offset and a difference in sampling gain by the AMOLED detection system of the present invention
  • FIG. 5 is a flowchart of an AMOLED detection method according to the present invention.
  • the present invention provides an AMOLED detection system including a plurality of detection devices 20 electrically connected to the display panel 10 respectively;
  • Each detection device 20 includes an offset adjuster 21 connected to the display panel 10, a gain adjuster 22 connected to the offset adjuster 21, and an analog-to-digital converter connected to the gain adjuster 22. twenty three;
  • the offset adjuster 21 is configured to obtain a sampling voltage signal Vin, and provide an offset adjusting voltage Voffset to adjust the sampling voltage signal Vin, and output a first sampling voltage output signal Vout1, the first sampling voltage
  • the output signal Vout1 is within the voltage sampling range of the analog-to-digital converter 23;
  • the voltage sampling range of the analog-to-digital converter 23 is that the sampling voltage signal Vin corresponding to the voltage range of the analog-to-digital converter 23 can provide a sampling code value Code, that is, the sampling voltage signal Vin is within a voltage range.
  • the sampling code value Code has a linear relationship;
  • the gain adjuster 22 is configured to obtain a first sampling voltage output signal Vout1, and provide a gain coefficient A to adjust the first sampling voltage output signal Vout1, and output a second sampling voltage output signal Vout2 to the analog-to-digital converter 23 , So that the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are the same, that is, the voltage sampling gain of the analog-to-digital converter 23 in each detection device 20 is the same .
  • each detection device 20 has an origin offset difference, that is, when the sampling voltage signal Vin is 0, the mode in each detection device 20 is different.
  • the sampling voltage output signal Vout1 is within the voltage sampling range of the analog-to-digital converter 23, so that the analog-to-digital converter 23 in each detection device 20 can provide a sampling code value corresponding to the sampling voltage signal Vin in a voltage range. Code.
  • the sampling gain of the analog-to-digital converter 23 in each detection device 20 is different, that is, the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are different. .
  • the voltage sampling gain of the analog-to-digital converter 23 in the device 20 is the same, that is, the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are the same, so that the analog-to-digital converter 23 Accurate sampling improves the detection accuracy of AMOLED.
  • the offset adjustment voltage Voffset is equal to the origin offset value, that is, when the sampling voltage signal Vin is 0, the analog-to-digital converter 23 in each detection device 20 corresponds to the sampling code value provided by the same sampling voltage signal Vin Code is 0.
  • the offset adjuster 21 includes: a first operational amplifier D1, a first resistor R1, a second resistor R2, a third resistor R3, and a fourth resistor R4;
  • the inverting input terminal of the first operational amplifier D1 is electrically connected to the first terminal of the first resistor R1, the non-inverting input terminal is electrically connected to the first terminal of the second resistor R2, and the output terminal outputs the first sampling voltage output signal Vout1;
  • a second end of the first resistor R1 is connected to an offset adjustment voltage Voffset;
  • the second terminal of the second resistor R2 is connected to the sampling voltage signal Vin;
  • the two ends of the third resistor R3 are electrically connected to the inverting input terminal and the output terminal of the first operational amplifier D1, respectively;
  • a first terminal of the fourth resistor R4 is electrically connected to a non-inverting input terminal of the first operational amplifier D1, and a second terminal is grounded.
  • the gain adjuster 22 includes: a second operational amplifier D2, an adjustable resistor R5, and a sixth resistor R6;
  • the inverting input terminal of the second operational amplifier D2 is electrically connected to the output terminal, the non-inverting input terminal is electrically connected to the first terminal of the adjustable resistor R5, and the output terminal outputs the second sampling voltage output signal Vout2;
  • the second end of the adjustable resistor R5 is connected to a first sampling voltage output signal Vout1;
  • a first terminal of the sixth resistor R6 is electrically connected to a non-inverting input terminal of the second operational amplifier D2, and a second terminal is grounded.
  • the gain coefficient A of the gain adjuster 22 is Ra / (Ra + Rb); wherein Ra is the resistance value of the sixth resistor R6, and Rb is the resistance value of the adjustable resistor R5.
  • Ra is the resistance value of the sixth resistor R6, and Rb is the resistance value of the adjustable resistor R5.
  • the ratio of the resistance value of the adjustable resistor R5 to the resistance value of the sixth resistor R6 is 0. ⁇ 1/9, that is, the value of the gain coefficient A ranges from 0.9 to 1.
  • the display panel 10 includes a plurality of display areas 11 respectively corresponding to a plurality of detection devices 20, and each display area 11 includes a plurality of pixels 12 arranged in an array.
  • the offset adjuster 21 is electrically connected to a plurality of pixels 12 in the corresponding display area 11, and obtains a sampling voltage signal Vin of each pixel 12.
  • the offset adjuster 21 in each detection device 20 is electrically connected to the driving thin film transistors in the plurality of pixels 12 in the corresponding display area 11.
  • the sampling voltage signal Vin is a gate-source voltage of a driving thin film transistor.
  • the present invention also provides an AMOLED detection method, which is applied to the above-mentioned AMOLED detection system and includes the following steps:
  • Step S1 the offset adjuster 21 obtains a sampling voltage signal Vin, and provides an offset adjusting voltage Voffset to adjust the sampling voltage signal Vin, and outputs a first sampling voltage output signal Vout1, the first sampling voltage
  • the output signal Vout1 is within the voltage sampling range of the analog-to-digital converter 23;
  • the voltage sampling range of the analog-to-digital converter 23 is that the sampling voltage signal Vin corresponding to the voltage range of the analog-to-digital converter 23 can provide a sampling code value Code, that is, the sampling voltage signal Vin is within a voltage range.
  • the sampling code value Code has a linear relationship;
  • Step S2 the gain adjuster 22 obtains a first sampling voltage output signal Vout1, and provides a gain coefficient A to adjust the first sampling voltage output signal Vout1, and outputs a second sampling voltage output signal Vout2 to the analog-to-digital converter 23 , So that the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are the same, that is, the voltage sampling gain of the analog-to-digital converter 23 in each detection device 20 is the same.
  • each detection device 20 has an origin offset difference, that is, when the sampling voltage signal Vin is 0, the mode in each detection device 20 is different.
  • the sampling voltage output signal Vout1 is within the voltage sampling range of the analog-to-digital converter 23, so that the analog-to-digital converter 23 in each detection device 20 can provide a sampling code value corresponding to the sampling voltage signal Vin in a voltage range. Code.
  • the sampling gain of the analog-to-digital converter 23 in each detection device 20 is different, that is, the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are different. .
  • the voltage sampling gain of the analog-to-digital converter 23 in the device 20 is the same, that is, the sampling code values Code provided by the analog-to-digital converter 23 in each detection device 20 corresponding to the same sampling voltage signal Vin are the same, so that the analog-to-digital converter 23 Accurate sampling improves the detection accuracy of AMOLED.
  • the AMOLED detection system of the present invention solves the origin offset of the analog-to-digital converter in each detection device by setting an offset adjuster and a gain adjuster in multiple detection devices.
  • the problem of the difference and the sampling gain difference enables the analog-to-digital converter in each detection device to provide a sampling code value corresponding to the sampling voltage signal in a voltage range, and at the same time enables the analog-to-digital in each detection device
  • the sampling encoding values provided by the converters for the same sampling voltage signal are all the same, so that the sampling of the analog-to-digital converter is accurate, and the detection accuracy of AMOLED is improved.
  • the AMOLED detection method of the present invention can solve the problems of the origin offset difference and the sampling gain difference of the analog-to-digital converter in each detection device, so that the sampling of the analog-to-digital converter is accurate, and the detection accuracy of AMOLED is improved. .

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  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
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Abstract

一种AMOLED的侦测系统及侦测方法。AMOLED的侦测系统通过在多个侦测装置(20)中均设置偏移量调节器(21)和增益调节器(22)，解决每个侦测装置(20)中的模数转换器(23)存在的原点偏移差异和采样增益差异的问题，使得每个侦测装置(20)中的模数转换器(23)对应处于一电压大小范围内的采样电压信号均能提供一采样编码值，同时使每个侦测装置(20)中的模数转换器(23)对应同一采样电压信号提供的采样编码值均相同。

Description

AMOLED的侦测系统及侦测方法 技术领域
本发明涉及显示技术领域，尤其涉及一种AMOLED显示面板的侦测系统及侦测方法。
 背景技术
有机发光二极管（Organic Light Emitting Display，OLED）显示装置具有自发光、驱动电压低、发光效率高、响应时间短、清晰度与对比度高、近180°视角、使用温度范围宽，可实现柔性显示与大面积全色显示等诸多优点，被业界公认为是最有发展潜力的显示装置。
OLED显示装置按照驱动方式可以分为无源矩阵型OLED（Passive Matrix OLED，PMOLED）和有源矩阵型OLED（Active Matrix OLED，AMOLED）两大类，即直接寻址和薄膜晶体管（Thin Film Transistor，TFT）矩阵寻址两类。其中，AMOLED具有呈阵列式排布的像素，属于主动显示类型，发光效能高，通常用作高清晰度的大尺寸显示装置。
由于现有的大尺寸AMOLED中的每一像素中的驱动薄膜晶体管的阈值电压与本征导电因子、有机发光二极管的发光系数均存在差异，会导致即使驱动薄膜晶体管栅源极电压差相同的情况下，AMOLED显示器的亮度也会呈现不均匀性，因此通过采用外部侦测补偿技术补偿每一像素中的驱动薄膜晶体管，提高亮度的均匀性。如图1所示，现有的AMOLED的侦测系统包括：显示面板100以及与显示面板100电性连接的侦测电路200；所述显示面板100包括多个显示区域101，每个显示区域101包括多个阵列排布的像素102；所述侦测装置200包括与多个显示区域101对应的多个模数转换器（ADC）201，每个模数转换器201均与其对应的显示区域101中的多个像素102电性连接；通过模数转换器201采样像素102中的驱动薄膜晶体管栅源极电压Vgs，将栅源极电压Vgs从模拟信号转换为数字信号，进而进行补偿。然而多个模数转换器201之间存在原点偏移差异及采样增益差异，多个模数转换器201采样相同的电压时，获得的采样编码值存在差异，将会降低AMOLED的侦测准确性，并且采样精度较高的模数转换器201，其采样范围通常较小，若模数转换器201采样的电压超出其采样范围，会导致采样数据不准确。
 技术问题
本发明的目的在于提供一种AMOLED的侦测系统，能够解决每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得模数转换器采样准确，提高AMOLED的侦测准确性。
本发明的目的还在于提供一种AMOLED的侦测方法，解决了每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得模数转换器采样准确，提高AMOLED的侦测准确性。
 技术解决方案
为实现上述目的，本发明还提供一种AMOLED的侦测系统，包括多个分别与显示面板电性连接的侦测装置；
每一侦测装置均包括与显示面板连接的偏移量调节器、与所述偏移量调节器连接的增益调节器以及与所述增益调节器连接的模数转换器；
所述偏移量调节器，用于获取一采样电压信号，并提供一偏移量调节电压调节所述采样电压信号，输出一第一采样电压输出信号，该第一采样电压输出信号处于模数转换器的电压采样范围内；
所述模数转换器的电压采样范围为模数转换器对应处于一电压大小范围内的采样电压信号均能提供一采样编码值；
所述增益调节器，用于获取第一采样电压输出信号，并提供一增益系数调节所述第一采样电压输出信号，输出一第二采样电压输出信号至模数转换器，使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同。
当采样电压信号为0时，每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均为0。
所述偏移量调节器包括：第一运算放大器、第一电阻、第二电阻、第三电阻以及第四电阻；
所述第一运算放大器的反相输入端电性连接第一电阻的第一端，同相输入端电性连接第二电阻的第一端，输出端输出第一采样电压输出信号；
所述第一电阻的第二端接入偏移量调节电压；
所述第二电阻的第二端接入采样电压信号；
所述第三电阻的两端分别电性连接第一运算放大器的反相输入端和输出端；
所述第四电阻的第一端电性连接第一运算放大器的同相输入端，第二端接地。
所述增益调节器包括：第二运算放大器、可调节电阻以及第六电阻；
所述第二运算放大器的反相输入端电性连接输出端，同相输入端电性连接可调节电阻的第一端，输出端输出第二采样电压输出信号；
所述可调节电阻的第二端接入第一采样电压输出信号；
所述第六电阻的第一端电性连接第二运算放大器的同相输入端，第二端接地。
所述增益调节器的增益系数为 Ra/(Ra+Rb)；其中，Ra为第六电阻的电阻值，Rb为可调节电阻的电阻值。
所述可调节电阻的电阻值与第六电阻的电阻值的比值范围为0~1/9。
所述显示面板包括与多个侦测装置分别对应的多个显示区域，每个显示区域均包括呈阵列排布的多个像素，每一侦测装置中的偏移量调节器与对应显示区域中的多个像素均电性连接，获取每一像素的采样电压信号。
每一侦测装置中的偏移量调节器与对应显示区域中的多个像素中的驱动薄膜晶体管均电性连接。
所述采样电压信号为驱动薄膜晶体管的栅源极电压。
本发明还提供了一种使用多个侦测装置侦测有源矩阵有机发光二极管(AMOLED)显示面板的方法，每一侦测装置包括偏移量调节器、增益调节器和模数转换器，所述方法包括：
所述偏移量调节器获取一采样电压信号，并提供一偏移量调节电压调节所述采样电压信号，输出一第一采样电压输出信号，该第一采样电压输出信号处于模数转换器的电压采样范围内，其中所述模数转换器的电压采样范围为模数转换器对应处于一电压大小范围内的采样电压信号均能提供一采样编码值；
所述增益调节器获取第一采样电压输出信号，并提供一增益系数调节所述第一采样电压输出信号，输出一第二采样电压输出信号至模数转换器，使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同。
当采样电压信号为0时，每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均为0。
所述偏移量调节器包括：第一运算放大器、第一电阻、第二电阻、第三电阻以及第四电阻；
所述第一运算放大器的反相输入端电性连接第一电阻的第一端，同相输入端电性连接第二电阻的第一端，输出端输出第一采样电压输出信号；
所述第一电阻的第二端接入偏移量调节电压；
所述第二电阻的第二端接入采样电压信号；
所述第三电阻的两端分别电性连接第一运算放大器的反相输入端和输出端；
所述第四电阻的第一端电性连接第一运算放大器的同相输入端，第二端接地。
所述增益调节器包括：第二运算放大器、可调节电阻以及第六电阻；
所述第二运算放大器的反相输入端电性连接输出端，同相输入端电性连接可调节电阻的第一端，输出端输出第二采样电压输出信号；
所述可调节电阻的第二端接入第一采样电压输出信号；
所述第六电阻的第一端电性连接第二运算放大器的同相输入端，第二端接地。
所述增益调节器的增益系数为 Ra/(Ra+Rb)；其中，Ra为第六电阻的电阻值，Rb为可调节电阻的电阻值。
所述可调节电阻的电阻值与第六电阻的电阻值的比值范围为0~1/9。
所述显示面板包括与多个侦测装置分别对应的多个显示区域，每个显示区域均包括呈阵列排布的多个像素，每一侦测装置中的偏移量调节器与对应显示区域中的多个像素均电性连接，获取每一像素的采样电压信号。
每一侦测装置中的偏移量调节器与对应显示区域中的多个像素中的驱动薄膜晶体管均电性连接。
所述采样电压信号为驱动薄膜晶体管的栅源极电压。
 有益效果
相较于现有技术，本发明的AMOLED的侦测系统通过在多个侦测装置中均设置偏移量调节器和增益调节器，解决每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得每个侦测装置中的模数转换器对应处于一电压大小范围内的采样电压信号均能提供一采样编码值，同时使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同，使模数转换器采样准确，提高AMOLED的侦测准确性。本发明的AMOLED的侦测方法，能够解决每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得模数转换器采样准确，提高AMOLED的侦测准确性。
为了能更进一步了解本发明的特征以及技术内容，请参阅以下有关本发明的详细说明与附图，然而附图仅提供参考与说明用，并非用来对本发明加以限制。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为现有的AMOLED的侦测系统的示意图；
图2为本发明的AMOLED的侦测系统的示意图；
图3为本发明的AMOLED的侦测系统的侦测装置的示意图；
图4为本发明的AMOLED的侦测系统消除原点偏移差异和采样增益差异的示意图；
图5为本发明的AMOLED的侦测方法的流程图。
 本发明的实施方式
为更进一步阐述本发明所采取的技术手段及其效果，以下结合本发明的优选实施例及其附图进行详细描述。
请参阅图2及图4，本发明提供一种AMOLED的侦测系统，包括多个分别与所述显示面板10电性连接的侦测装置20；
每一侦测装置20均包括与显示面板10连接的偏移量调节器21、与所述偏移量调节器21连接的增益调节器22以及与所述增益调节器22连接的模数转换器23；
所述偏移量调节器21，用于获取一采样电压信号Vin，并提供一偏移量调节电压Voffset调节所述采样电压信号Vin，输出一第一采样电压输出信号Vout1，该第一采样电压输出信号Vout1处于模数转换器23的电压采样范围内；
所述模数转换器23的电压采样范围为模数转换器23对应处于一电压大小范围内的采样电压信号Vin均能提供一采样编码值Code，即采样电压信号Vin在一电压大小范围内与采样编码值Code呈线性关系；
所述增益调节器22，用于获取第一采样电压输出信号Vout1，并提供一增益系数A调节所述第一采样电压输出信号Vout1，输出一第二采样电压输出信号Vout2至模数转换器23，使每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code均相同，即每个侦测装置20中的模数转换器23的电压采样增益均相同。
需要说明的是，如图4所示，由于每个侦测装置20中的模数转换器23存在原点偏移差异，即当采样电压信号Vin为0时，每个侦测装置20中的模数转换器23对应采样电压信号Vin提供的采样编码值Code存在一原点偏移值，使得模数转换器23对应处于一电压大小范围内的采样电压信号Vin无法均提供一采样编码值Code，即采样电压信号Vin会超过模数转换器23的电压采样范围。本发明通过偏移量调节器21提供一偏移量调节电压Voffset调节采样电压信号Vin，抵消该原点偏移值，输出一第一采样电压输出信号Vout1，即Vout1=Vin-Voffset，该第一采样电压输出信号Vout1处于模数转换器23的电压采样范围内，使每个侦测装置20中的模数转换器23对应处于一电压大小范围内的采样电压信号Vin均能提供一采样编码值Code。进一步地，每个侦测装置20中的模数转换器23还存在采样增益差异，即每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code不相同。本发明进而通过增益调节器22提供一增益系数A调节第一采样电压输出信号Vout1，输出一第二采样电压输出信号Vout2至模数转换器23，即Vout2=Vout1*A，使每个侦测装置20中的模数转换器23的电压采样增益相同，即每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code均相同，使模数转换器23采样准确，提高AMOLED的侦测准确性。
优选地，偏移量调节电压Voffset等于原点偏移值，即，当采样电压信号Vin为0时，每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code均为0。
具体地，请参阅图3，所述偏移量调节器21包括：第一运算放大器D1、第一电阻R1、第二电阻R2、第三电阻R3以及第四电阻R4；
所述第一运算放大器D1的反相输入端电性连接第一电阻R1的第一端，同相输入端电性连接第二电阻R2的第一端，输出端输出第一采样电压输出信号Vout1；
所述第一电阻R1的第二端接入偏移量调节电压Voffset；
所述第二电阻R2的第二端接入采样电压信号Vin；
所述第三电阻R3的两端分别电性连接第一运算放大器D1的反相输入端和输出端；
所述第四电阻R4的第一端电性连接第一运算放大器D1的同相输入端，第二端接地。
具体地，请参阅图3，所述增益调节器22包括：第二运算放大器D2、可调节电阻R5以及第六电阻R6；
所述第二运算放大器D2的反相输入端电性连接输出端，同相输入端电性连接可调节电阻R5的第一端，输出端输出第二采样电压输出信号Vout2；
所述可调节电阻R5的第二端接入第一采样电压输出信号Vout1；
所述第六电阻R6的第一端电性连接第二运算放大器D2的同相输入端，第二端接地。
具体地，所述增益调节器22的增益系数A为 Ra/(Ra+Rb)；其中，Ra为第六电阻R6的电阻值，Rb为可调节电阻R5的电阻值。通过调节可调节电阻R5的电阻值可以改变增益系数A的大小，为了提供更高精度的增益系数A，优选地，可调节电阻R5的电阻值与第六电阻R6的电阻值的比值范围为0~1/9，即增益系数A的取值范围为0.9~1。
具体地，所述显示面板10包括与多个侦测装置20分别对应的多个显示区域11，每个显示区域11均包括呈阵列排布的多个像素12，每一侦测装置20中的偏移量调节器21与对应的显示区域11中的多个像素12均电性连接，获取每一像素12的采样电压信号Vin。
优选地，每一侦测装置20中的偏移量调节器21与对应显示区域11中的多个像素12中的驱动薄膜晶体管均电性连接。
优选地，该采样电压信号Vin为驱动薄膜晶体管的栅源极电压。
请参阅图5，本发明还提供一种AMOLED的侦测方法，应用于上述的AMOLED的侦测系统，包括如下步骤：
步骤S1、所述偏移量调节器21获取一采样电压信号Vin，并提供一偏移量调节电压Voffset调节所述采样电压信号Vin，输出一第一采样电压输出信号Vout1，该第一采样电压输出信号Vout1处于模数转换器23的电压采样范围内；
所述模数转换器23的电压采样范围为模数转换器23对应处于一电压大小范围内的采样电压信号Vin均能提供一采样编码值Code，即采样电压信号Vin在一电压大小范围内与采样编码值Code呈线性关系；
步骤S2、所述增益调节器22获取第一采样电压输出信号Vout1，并提供一增益系数A调节所述第一采样电压输出信号Vout1，输出一第二采样电压输出信号Vout2至模数转换器23，使每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code均相同，即每个侦测装置20中的模数转换器23的电压采样增益相同。
需要说明的是，如图4所示，由于每个侦测装置20中的模数转换器23存在原点偏移差异，即当采样电压信号Vin为0时，每个侦测装置20中的模数转换器23对应采样电压信号Vin提供的采样编码值Code存在一原点偏移值，使得模数转换器23对应处于一电压大小范围内的采样电压信号Vin无法均提供一采样编码值Code，即采样电压信号Vin会超过模数转换器23的电压采样范围。本发明通过偏移量调节器21提供一偏移量调节电压Voffset调节采样电压信号Vin，抵消该原点偏移值，输出一第一采样电压输出信号Vout1，即Vout1=Vin-Voffset，该第一采样电压输出信号Vout1处于模数转换器23的电压采样范围内，使每个侦测装置20中的模数转换器23对应处于一电压大小范围内的采样电压信号Vin均能提供一采样编码值Code。进一步地，每个侦测装置20中的模数转换器23还存在采样增益差异，即每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code不相同。本发明进而通过增益调节器22提供一增益系数A调节第一采样电压输出信号Vout1，输出一第二采样电压输出信号Vout2至模数转换器23，即Vout2=Vout1*A，使每个侦测装置20中的模数转换器23的电压采样增益相同，即每个侦测装置20中的模数转换器23对应同一采样电压信号Vin提供的采样编码值Code均相同，使模数转换器23采样准确，提高AMOLED的侦测准确性。
 工业实用性
综上所述，本发明的AMOLED的侦测系统通过在多个侦测装置中均设置偏移量调节器和增益调节器，解决每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得每个侦测装置中的模数转换器对应处于一电压大小范围内的采样电压信号均能提供一采样编码值，同时使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同，使模数转换器采样准确，提高AMOLED的侦测准确性。本发明的AMOLED的侦测方法，能够解决每个侦测装置中的模数转换器存在的原点偏移差异和采样增益差异的问题，使得模数转换器采样准确，提高AMOLED的侦测准确性。
综上所述，虽然本发明已以优选实施例揭露如上，但上述优选实施例并非用以限制本发明，本领域的普通技术人员，在不脱离本发明的精神和范围内，均可作各种更动与润饰，因此本发明的保护范围以权利要求界定的范围为准。

Claims (18)

  1. 一种用于有源矩阵有机发光二极管(AMOLED)显示面板的侦测系统，包括：多个侦测装置，电性连接所述显示面板，每一侦测装置包括：
    偏移量调节器，电性连接所述显示面板，用于提供一偏移量调节电压调节一采样电压信号，并输出一第一采样电压输出信号；
    增益调节器，电性连接所述偏移量调节器，用于依据一增益系数调节所述第一采样电压输出信号，并输出一第二采样电压输出信号；以及
    模数转换器，电性连接所述增益调节器，用于将所述第二采样电压输出信号转换为采样编码值；
    其中该第一采样电压输出信号处于该模数转换器的电压采样范围内，使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同。
  2. 如权利要求1所述的AMOLED的侦测系统，其中当该采样电压信号为0时，每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均为0。
  3. 如权利要求1所述的AMOLED的侦测系统，其中所述偏移量调节器包括：第一运算放大器、第一电阻、第二电阻、第三电阻以及第四电阻；
    所述第一运算放大器的反相输入端电性连接第一电阻的第一端，同相输入端电性连接第二电阻的第一端，输出端输出第一采样电压输出信号；
    所述第一电阻的第二端接入偏移量调节电压；
    所述第二电阻的第二端接入采样电压信号；
    所述第三电阻的两端分别电性连接第一运算放大器的反相输入端和输出端；
    所述第四电阻的第一端电性连接第一运算放大器的同相输入端，第二端接地。
  4. 如权利要求1所述的AMOLED的侦测系统，其中所述增益调节器包括：第二运算放大器、可调节电阻以及第六电阻；
    所述第二运算放大器的反相输入端电性连接输出端，同相输入端电性连接可调节电阻的第一端，输出端输出第二采样电压输出信号；
    所述可调节电阻的第二端接入第一采样电压输出信号；
    所述第六电阻的第一端电性连接第二运算放大器的同相输入端，第二端接地。
  5. 如权利要求4所述的AMOLED的侦测系统，其中所述增益调节器的增益系数为 Ra/(Ra+Rb)；其中，Ra为第六电阻的电阻值，Rb为可调节电阻的电阻值。
  6. 如权利要求5所述的AMOLED的侦测系统，其中所述可调节电阻的电阻值与第六电阻的电阻值的比值范围为0~1/9。
  7. 如权利要求1所述的AMOLED的侦测系统，其中所述显示面板包括与多个侦测装置分别对应的多个显示区域，每个显示区域均包括呈阵列排布的多个像素，每一侦测装置中的偏移量调节器与对应显示区域中的多个像素均电性连接，获取每一像素的采样电压信号。
  8. 如权利要求7所述的AMOLED的侦测系统，其中每一侦测装置中的偏移量调节器与对应显示区域中的多个像素中的驱动薄膜晶体管均电性连接。
  9. 如权利要求8所述的AMOLED的侦测系统，其中所述采样电压信号为驱动薄膜晶体管的栅源极电压。
  10. 一种使用多个侦测装置侦测有源矩阵有机发光二极管(AMOLED)显示面板的方法，每一侦测装置包括偏移量调节器、增益调节器和模数转换器，所述方法包括：
    所述偏移量调节器获取一采样电压信号，并提供一偏移量调节电压调节所述采样电压信号，输出一第一采样电压输出信号，该第一采样电压输出信号处于模数转换器的电压采样范围内，其中所述模数转换器的电压采样范围为模数转换器对应处于一电压大小范围内的采样电压信号均能提供一采样编码值；
    所述增益调节器获取第一采样电压输出信号，并提供一增益系数调节所述第一采样电压输出信号，输出一第二采样电压输出信号至模数转换器，使每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均相同。
  11. 如权利要求10所述的方法，其中当该采样电压信号为0时，每个侦测装置中的模数转换器对应同一采样电压信号提供的采样编码值均为0。
  12. 如权利要求10所述的方法，其中所述偏移量调节器包括：第一运算放大器、第一电阻、第二电阻、第三电阻以及第四电阻；
    所述第一运算放大器的反相输入端电性连接第一电阻的第一端，同相输入端电性连接第二电阻的第一端，输出端输出第一采样电压输出信号；
    所述第一电阻的第二端接入偏移量调节电压；
    所述第二电阻的第二端接入采样电压信号；
    所述第三电阻的两端分别电性连接第一运算放大器的反相输入端和输出端；
    所述第四电阻的第一端电性连接第一运算放大器的同相输入端，第二端接地。
  13. 如权利要求10所述的方法，其中所述增益调节器包括：第二运算放大器、可调节电阻以及第六电阻；
    所述第二运算放大器的反相输入端电性连接输出端，同相输入端电性连接可调节电阻的第一端，输出端输出第二采样电压输出信号；
    所述可调节电阻的第二端接入第一采样电压输出信号；
    所述第六电阻的第一端电性连接第二运算放大器的同相输入端，第二端接地。
  14. 如权利要求13所述的方法，其中所述增益调节器的增益系数为Ra/(Ra+Rb)；其中，Ra为第六电阻的电阻值，Rb为可调节电阻的电阻值。
  15. 如权利要求14所述的方法，其中所述可调节电阻的电阻值与第六电阻的电阻值的比值范围为0~1/9。
  16. 如权利要求10所述的方法，其中所述显示面板包括与多个侦测装置分别对应的多个显示区域，每个显示区域均包括呈阵列排布的多个像素，每一侦测装置中的偏移量调节器与对应显示区域中的多个像素均电性连接，获取每一像素的采样电压信号。
  17. 如权利要求16所述的方法，其中每一侦测装置中的偏移量调节器与对应显示区域中的多个像素中的驱动薄膜晶体管均电性连接。
  18. 如权利要求17所述的方法，其中所述采样电压信号为驱动薄膜晶体管的栅源极电压。
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Publication number Priority date Publication date Assignee Title
CN108932923B (zh) * 2018-07-03 2020-09-01 深圳市华星光电半导体显示技术有限公司 Amoled的侦测系统及侦测方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285302A (en) * 1992-03-30 1994-02-08 Industrial Technology Research Institute TFT matrix liquid crystal display with compensation capacitance plus TFT stray capacitance constant irrespective of mask misalignment during patterning
US20020145598A1 (en) * 2001-04-05 2002-10-10 Industrial Technology Research Institute Adjustable biased gamma-correction circuit with central-symmetry voltage
JP3642343B2 (ja) * 1993-12-22 2005-04-27 シャープ株式会社 表示装置の駆動回路
CN101937662A (zh) * 2008-10-30 2011-01-05 三星电子株式会社 触摸控制器、具有其的显示驱动电路、显示设备和系统
CN103366706A (zh) * 2013-07-19 2013-10-23 深圳市华星光电技术有限公司 一种栅极驱动器的电压补偿电路和方法以及液晶显示装置
CN108932923A (zh) * 2018-07-03 2018-12-04 深圳市华星光电半导体显示技术有限公司 Amoled的侦测系统及侦测方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4547064B2 (ja) * 1999-03-24 2010-09-22 株式会社アドバンテスト Ａ／ｄ変換装置およびキャリブレーション装置
KR100571825B1 (ko) * 2003-11-28 2006-04-17 삼성전자주식회사 가변형 스펙트럼의 분해능 향상을 위한 분광 성분 분석방법 및 그 장치
US7084795B2 (en) * 2004-06-02 2006-08-01 Mstar Semiconductor, Inc. Video signal processing system with a dynamic ADC calibration loop and related methods
US9154147B2 (en) * 2013-03-15 2015-10-06 Integrated Device Technology Inc. Systems and methods for estimation of offset and gain errors in a time-interleaved analog-to-digital converter
KR101597037B1 (ko) * 2014-06-26 2016-02-24 엘지디스플레이 주식회사 구동소자의 전기적 특성 편차를 보상할 수 있는 유기발광 표시장치
CN106097943B (zh) * 2016-08-08 2018-06-01 深圳市华星光电技术有限公司 Oled驱动薄膜晶体管的阈值电压侦测方法
KR102609508B1 (ko) * 2016-11-11 2023-12-04 엘지디스플레이 주식회사 외부 보상용 드라이버 집적회로와 그를 포함한 표시장치
CN106603075B (zh) * 2016-11-18 2020-03-10 中国电子科技集团公司第四十一研究所 一种多adc高速交叉采样校准装置及校准方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285302A (en) * 1992-03-30 1994-02-08 Industrial Technology Research Institute TFT matrix liquid crystal display with compensation capacitance plus TFT stray capacitance constant irrespective of mask misalignment during patterning
JP3642343B2 (ja) * 1993-12-22 2005-04-27 シャープ株式会社 表示装置の駆動回路
US20020145598A1 (en) * 2001-04-05 2002-10-10 Industrial Technology Research Institute Adjustable biased gamma-correction circuit with central-symmetry voltage
CN101937662A (zh) * 2008-10-30 2011-01-05 三星电子株式会社 触摸控制器、具有其的显示驱动电路、显示设备和系统
CN103366706A (zh) * 2013-07-19 2013-10-23 深圳市华星光电技术有限公司 一种栅极驱动器的电压补偿电路和方法以及液晶显示装置
CN108932923A (zh) * 2018-07-03 2018-12-04 深圳市华星光电半导体显示技术有限公司 Amoled的侦测系统及侦测方法

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